• 1.  The production of a voltage across an inductor as a result of its own expanding or contracting magnetic field is called ____.

• Flux density
• Self-inductance
• Counter emf
• 2.  The ability of a capacitor to store a charge is called __________.

• Resistance
• Capacitance
• Inductance
• Dielectric constant

• C = Q/V
• V = C×Q
• Q = C/V
• Q = V/C
• 4.  If the capacitance of a capacitor is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:

• 846×10-6Joule
• 7.23×10-3 Joule
• 6.76×10-5Joule
• 5.94×10-2Joule
• 5.  ------------------------ is created out of two metal plates and an insulating material called a dielectric.

• An inductor
• A capacitor
• A fixed resistor
• A variable resistor
• 6.  An inductor with an inductance of 5mH is connected in series with a 20 ohm resistor.What is the time constant of the inductor?

• 2.5 x 10^-4 s
• 4 x 10^4 s
• 0.1s
• 100s

• Ohm
• Henry
• Ampere turns
• Webers/meter
• 8.  The voltage induced across an inductor as its magnetic field collapses is called ____.

• Counter emf
• Transition voltage
• Reverse voltage
• Counter voltage

• Henry
• George
• Jones
• 10.  Inductor cores can be made of

• air
• iron
• magnetic materials
• all of these
• 11.  Inductors connected in series will

• be the reciprocal of the sum total of inductors for final value of Henrys
• be the sum total of inductors for final value of Henrys
• be the reciprocal of the sum of reciprocals of each inductor
• act as a voltage divider network
• 12.  ELI went to visit ICE and the two really resonated together! As a result, a ???? circuit was born.

• Cole-Porter phase invertor
• rejector
• tank
• Dailey-Vincent oscillator

• choke
• coil
• reactor
• all of these
• 14.  EMF is an acronym for

• Engineering Multiplier Force
• Elector Magnetic Field
• Electro Motive Foce
• Electronic Motivator Field

• BEMF
• EMF
• MFF
• BPM
• 16.  Skin effect is a concern

• at lower frequencies
• cable is exposed to UV rays
• at higher frequencies
• there are many eddy currents present

• Open
• Short
• Polar
• Non-polar
• 18.  The magnetic field can be increased by adding

• removing the core
• decreasing the number of windings
• changing the diameter of the wire insulation
• 19.  Skin effects tends to

• heat the conductor
• cause a huge loss of efficiency
• concentrate electrons on the outer edge (skin) of the conductor
• cause signal distortion

• how much I like you
• how much you study
• how lucky you are
• luck of the draw

• True
• False
• 22.  An inductor stores energy

• in the skin of the conductor
• in the magnetospheric region of the electrons
• in the dielectric material
• in a magnetic field

• 1/2πfL
• 2πfL
• f/2πL
• X
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